<script lang="tsx">
import type { DescriptionProps, DescInstance, DescItem } from './typing';
import type { DescriptionsProps } from 'ant-design-vue/es/descriptions/index';
import type { CSSProperties } from 'vue';
import type { CollapseContainerOptions } from '/@/components/Container/index';
import { defineComponent, computed, ref, unref } from 'vue';
import { get } from 'lodash-es';
import { Descriptions } from 'ant-design-vue';
import { CollapseContainer } from '/@/components/Container/index';
import { useDesign } from '/@/hooks/web/useDesign';
import { isFunction } from '/@/utils/is';
import { getSlot } from '/@/utils/helper/tsxHelper';
import { useAttrs } from '/@/hooks/core/useAttrs';

const props = {
  useCollapse: { type: Boolean, default: true },
  title: { type: String, default: '' },
  size: {
    type: String,
    validator: (v) => ['small', 'default', 'middle', undefined].includes(v),
    default: 'small',
  },
  bordered: { type: Boolean, default: true },
  column: {
    type: [Number, Object] as PropType<number | Recordable>,
    default: () => {
      return { xxl: 4, xl: 3, lg: 3, md: 3, sm: 2, xs: 1 };
    },
  },
  collapseOptions: {
    type: Object as PropType<CollapseContainerOptions>,
    default: null,
  },
  schema: {
    type: Array as PropType<DescItem[]>,
    default: () => [],
  },
  data: { type: Object },
};

export default defineComponent({
  name: 'Description',
  props,
  emits: ['register'],
  setup(props, { slots, emit }) {
    const propsRef = ref<Partial<DescriptionProps> | null>(null);

    const { prefixCls } = useDesign('description');
    const attrs = useAttrs();

    // Custom title component: get title
    const getMergeProps = computed(() => {
      return {
        ...props,
        ...(unref(propsRef) as Recordable),
      } as DescriptionProps;
    });

    const getProps = computed(() => {
      const opt = {
        ...unref(getMergeProps),
        title: undefined,
      };
      return opt as DescriptionProps;
    });

    /**
     * @description: Whether to setting title
     */
    const useWrapper = computed(() => !!unref(getMergeProps).title || !!slots.title);

    /**
     * @description: Get configuration Collapse
     */
    const getCollapseOptions = computed((): CollapseContainerOptions => {
      return {
        // Cannot be expanded by default
        canExpand: false,
        expand: true,
        ...unref(getProps).collapseOptions,
      };
    });

    const getDescriptionsProps = computed(() => {
      return { ...unref(attrs), ...unref(getProps) } as DescriptionsProps;
    });

    /**
     * @description:设置desc
     */
    function setDescProps(descProps: Partial<DescriptionProps>): void {
      // Keep the last setDrawerProps
      propsRef.value = { ...(unref(propsRef) as Recordable), ...descProps } as Recordable;
    }

    // Prevent line breaks
    function renderLabel({ label, labelMinWidth, labelStyle }: DescItem) {
      if (!labelStyle && !labelMinWidth) {
        return label;
      }

      const labelStyles: CSSProperties = {
        ...labelStyle,
        minWidth: `${labelMinWidth}px `,
      };
      return <div style={labelStyles}>{label}</div>;
    }

    function renderItem() {
      const { schema, data } = unref(getProps);
      return unref(schema)
        .map((item) => {
          const { render, slot, field, span, show, contentMinWidth } = item;

          if (show && isFunction(show) && !show(data)) {
            return null;
          }

          const getContent = () => {
            const _data = unref(getProps)?.data;
            const getField = get(_data, field);
            if (!_data) {
              return null;
            }
            if (slot) {
              return getSlot(slots, slot, { val: getField, data: _data })
            }
            return isFunction(render) ? render(getField, _data) : getField ?? '';
          };

          const width = contentMinWidth;
          return (
            <Descriptions.Item label={renderLabel(item)} key={field} span={span}>
              {() => {
                if (!contentMinWidth) {
                  return getContent();
                }
                const style: CSSProperties = {
                  minWidth: `${width}px`,
                };
                return <div style={style}>{getContent()}</div>;
              }}
            </Descriptions.Item>
          );
        })
        .filter((item) => !!item);
    }

    const renderDesc = () => {
      return (
        <Descriptions class={`${prefixCls}`} {...(unref(getDescriptionsProps) as any)}>
          {renderItem()}
        </Descriptions>
      );
    };

    const renderContainer = () => {
      const content = props.useCollapse ? renderDesc() : <div>{renderDesc()}</div>;
      // Reduce the dom level
      if (!props.useCollapse) {
        return content;
      }

      const { canExpand, expand, helpMessage } = unref(getCollapseOptions);
      const { title } = unref(getMergeProps);

      return (
        <CollapseContainer title={title} canExpan={canExpand} expand={expand} helpMessage={helpMessage}>
          {{
            default: () => content,
            action: () => getSlot(slots, 'action'),
            title: () => getSlot(slots, 'title'),
          }}
        </CollapseContainer>
      );
    };

    const methods: DescInstance = {
      setDescProps,
    };

    emit('register', methods);
    return () => (unref(useWrapper) ? renderContainer() : renderDesc());
  },
});
</script>
